Judge Posner takes on the cat’s paw theory:
In the fable of the cat’s paw (a fable offensive to cats and cat lovers, be it noted), a monkey who wants chestnuts that are roasting in a fire persuades an intellectually challenged cat to fetch the chestnuts from the fire for the monkey, and the cat does so but in the process burns its paw. In employment discrimination law the “cat’s paw” metaphor refers to a situation in which an employee is fired or subjected to some other adverse employment action by a supervisor who himself has no discriminatory motive, but who has been manipulated by a subordinate who does have such a motive and intended to bring about the adverse employment action.
Cook v. IPC Int’l Corp, No. 11-2502 (7th Cir. Mar. 8, 2012).